How to make TPS Aim While moving?

Hi!
As I mentioned in the subject box, I’m talking about pistol aim offset animation. As what I’ve got for now is I can aim perfectly if I’m not moving but when I move and aim, the position of hands with the pistol is not on the aim position.
I’ve seen tutorials on youtube, that most of them didn’t take the challenge to use the pistol instead of the rifle.
So, how can I make my character pose with aim animation while moving without too many blending weird animation?